The Iran war has led to higher prices at the gas pump.

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Gas prices in the United States, up more than 30% since the U.S. and Israel launched the war, have soared as the global oil supply constricts.

Now at a national average of more than $4 per gallon, according to data from motor club AAA, this price increase is straining already-stretched budgets in households across the country.

NBC News is tracking gas prices and how they change at the national, state and county levels, and will be updating this article daily with the latest data.